First, complete your surface and lines in rhino and make sure they are fair and Ok.
Then, using control point of lines, make dat files and import them to Aveva Lines one by one. Don't import the surface.
In the Lines, create a patch from imported lines. The shape or location of the patch is not important; What ever you like. Just select a correct name for it.
Next, release the patch and all lines you need to Surface and Compartment.
In the Surface and Compartment, delete the surface and import the correct surface from rhino using SAT format. Rename the imported surface to same name for deleted patch.
Now, your correct surface is inside the Aveva and you can work on it and release it to other modules.
